wmderland: add tests and expose xsessions desktop

nixos/tests/all-tests.nix

@@ -371,6 +371,7 @@ in
   virtualbox = handleTestOn ["x86_64-linux"] ./virtualbox.nix {};
   wasabibackend = handleTest ./wasabibackend.nix {};
   wireguard = handleTest ./wireguard {};
+  wmderland = handleTest ./wmderland.nix {};
   wordpress = handleTest ./wordpress.nix {};
   xandikos = handleTest ./xandikos.nix {};
   xautolock = handleTest ./xautolock.nix {};

nixos/tests/wmderland.nix

@@ -0,0 +1,54 @@
+import ./make-test-python.nix ({ pkgs, ...} : {
+  name = "wmderland";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ takagiy ];
+  };
+
+  machine = { lib, ... }: {
+    imports = [ ./common/x11.nix ./common/user-account.nix ];
+    test-support.displayManager.auto.user = "alice";
+    services.xserver.displayManager.defaultSession = lib.mkForce "none+wmderland";
+    services.xserver.windowManager.wmderland.enable = true;
+
+    systemd.services.setupWmderlandConfig = {
+      wantedBy = [ "multi-user.target" ];
+      before = [ "multi-user.target" ];
+      environment = {
+        HOME = "/home/alice";
+      };
+      unitConfig = {
+        type = "oneshot";
+        RemainAfterExit = true;
+        user = "alice";
+      };
+      script = let
+        config = pkgs.writeText "config" ''
+             set $Mod = Mod1
+             bindsym $Mod+Return exec ${pkgs.xterm}/bin/xterm -cm -pc
+        '';
+      in ''
+        mkdir -p $HOME/.config/wmderland
+        cp ${config} $HOME/.config/wmderland/config
+      '';
+    };
+  };
+
+  testScript = { ... }: ''
+    with subtest("ensure x starts"):
+        machine.wait_for_x()
+        machine.wait_for_file("/home/alice/.Xauthority")
+        machine.succeed("xauth merge ~alice/.Xauthority")
+
+    with subtest("ensure we can open a new terminal"):
+        machine.send_key("alt-ret")
+        machine.wait_until_succeeds("pgrep xterm")
+        machine.wait_for_window(r"alice.*?machine")
+        machine.screenshot("terminal")
+
+    with subtest("ensure we can communicate through ipc with wmderlandc"):
+        # Kills the previously open xterm
+        machine.succeed("pgrep xterm")
+        machine.execute("DISPLAY=:0 wmderlandc kill")
+        machine.fail("pgrep xterm")
+  '';
+})

pkgs/applications/window-managers/wmderland/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, libnotify, libX11, xorgproto }:
+{ stdenv, fetchFromGitHub, cmake, libnotify, libX11, xorgproto, nixosTests }:
 
 with stdenv.lib;
 
@@ -31,6 +31,16 @@ stdenv.mkDerivation {
     xorgproto
   ];
 
+  postInstall = ''
+    install -Dm0644 -t $out/share/wmderland/contrib $src/example/config
+    install -Dm0644 -t $out/share/xsessions $src/example/wmderland.desktop
+  '';
+
+  passthru = {
+    tests.basic = nixosTests.wmderland;
+    providedSessions = [ "wmderland" ];
+  };
+
   meta = {
     description = "Modern and minimal X11 tiling window manager";
     homepage = "https://github.com/aesophor/wmderland";